Superheater.



C. D. YOUNG.

SUPEHHEATER.

APPLICATION msn 001.31, ma.

l:so tical wall 9 intermediateV gines, and

if UNITED sfrnrEs rA'rEnroFmcE.

errantes D. YoUNG, orI ALTOONA, rENNs rLvsNIA.

SUPERHEATER.

Application illed October 31, 1913.

To all whom z't may concern:

Be it known that I, a citizen of the United States` residing at Altoona,in thc county of Blair and State of Pennsylvania, have invented certainnew and useful Improvements in Superhcaters, of which the following is aspecliication.

The invention relates to superheaters for use upon locomotive andtraction and other engines, although certain features are par ticularlyadapted for use in traction enthe device is hereinafter described andillustrated as applied to Va traction entaken on the line gine.

.with the relatively large The principal objects ofthe invention; arethe provision of arrangement wherein the individual tubes may be easilyremoved and replaced with out disturbing other tubes, and wherein theends of the tubes secured in the headers are readily accessible withoutthe' use of a plurality of handholes; and the provision of an improvedsuperhenter tube arrangement whereby Va maximum superheating effect issecured with a minimum length of tube. One embodiment of Athe-inventionis illustrated in. the accompanying vvherein-d j Figure 1 is alongitudinal section through n. boiler equipped with .my improvedsuperheater, on the line I-I of Fig. 3, the superheater drum also beingshown in section; Fig. 2 is a section through one of the ire tubes otthe boiler, taken at right angles to the section of' Fig. '1, and Fig. 3is a transverse section on an III-HI of Fig. 1` Referring to Fig. 1 ofthe drawings, 1 4is the boiler of aV traction engine provided lire tubesor tlues 2 extending from the irebox` of the boiler to the smoke box 3andl carryin'gthe super- .heater tubes; 4 is the steam dome which steam4is supplied to Vthe superbes-ter by means of the dry pipe 5*;l 6 is theoutlet ipe leading from one ofthe superheater eaders to the cylinders;and 7 is the exbox. v i

` vSecured to the flue sheet of the boiler is a.' cylindrical drum 8provided with a verthe ends of the drum, such vWall serving to dividethe drum into 'the two headers 10 and 11. The dividing wall or partitionA9 is provided with closed by means of 'the cover a relatively largeopening which is normally 12 held remov Specification ofLetters Patent.Y

CHARLES D. Yonne,

a cheap, compact drawings,

enlarged scale,

from

haus't nozzle for securing draft in the smoke' rby using the relativelyshort len Seri'al No. 7! 85390.

in its end ,i

Patented Muay 8, 1917. i

means ot the ci ver l5, also held iii-place by means ot the usual studand brace as illustrated. The o1 tlet pipe G leading from the headerlllis pr )vided with a. valve 16 which may be located in any desiredposition with respect to the boiler.

A. plurality of superheater 19. 20. 21, 22. 23, and 2i a-re employed,each ot' which tubes has che ofits ends expanded into the wail of the.chamber 10. and its other end expanded into the wall of the chamber 11.,Srs indicated in Figs. l and 3, the two eues of any particular tube lieone behind the other` and from-Fig. Bit will be seen that no tube Aliesin front of another tube, so that any individual tube can' be remove :lwithout the necessity of removing another tube. This is or', course ofadvantageiu case it becomes necessary to replace one ol more tubes\vhile the other tubes are in p vsition. compliwsbed by .having theupper ends of the tubes bent radially with respect tothe drum` andmaltcug each tube lie either to the inside or the outside ot theadjacent tube.

is better with this arrangement than in one where the le :igths 26 and27 are made the same as that ,ofthe lengths 25 and 28, since the lengthsat. tubing 1n the extremity of the tire tube; adjacent the smoke boxtend to lose heat, due to the-lower temperature of the gases. at suchportions of the fire tubes. Furthermore the'friction is decreased hs 2'6and 27, since the eater tube lengths of super correspondinglydecreased.` The cost'of the tubing is also obviously less with the lesslength 'that is thecase `where the four tubes 17, 18,

the length of the 1 through whi ch the steam must be passed isextending' substantially the entire lengths the fire tube is used. AAnother advantage -fglslljetothe fact that. retardation of the gasesFflnissingl lthrough the liue is less where the :shortilengths 26 and 27ere employed, than vvhere such lengths extendthroughout the -full len hof the fire tubes.,

y It wi l bevunderstood'thet the 'advantages L as above set fortlrniaybe achieved even Where the length of the tube parts -26 and 27--sincreased or'deerezrsed over the proportions shown, und that myinvention is not limited to the precise construction sho-Wn, 'whichmerely serves to illustrate the principle involved. l

-The employment of the relatively large openings for the cover plates l2and 1 5 is desirable, in thatthe ends of the tubes canbe expandedlorient out by Workmen operating through these openings, thusavoiding thenecessity of employin a plurality of hand holes or coversvin the wellsof the header chamber, -opposite the tube ends.

Variousvother advantages incident to the construction of the drummidtubes, and the arrangement of the tubes, will be readily apparent'tothose skilled in the art.

' WhatI claim is:

`11.' 'In combination with Ve. boiler having a fire box and smoke box.and fire tubes extending through the'boilier from the fire box tothe`smoke box, n -pair 'of superheater ghqeders, Kan inletvv for. supplyingsaturated 35 steam-from the boilertoune header, en outlet.' from-` theother header, :ind-'a plurulity of superheater tubes each heving"one'end conneeted'to one header and the other, end

incident to the construction is connected to the other header, suchtubes euch leading vinto a fire tube at -thejront end thereof, extendingin a straight length of the fire tube, and finally recurving again andextending in n straighty 'len th" out,y through the-front end' of theIiretu e.

In combination with-:L boiler having a. fire box and Smoke box and firetubesy ex"- tending through the boiler from the lire' box to the smokebox, u pair of Superheater headers, an -inlet for supplying saturated'-steum from the boiler-to one header, an' outlet from the otherA header,'and eplurulity of vsuperheziter tubes each' having one end connectedvto one header and the other end connected to vthe other header, suc'hsuper-heater' tubes each comprising four lengths only lying in a. firetube lwith two lengths extending substantially the 'entire length of thefire tube and the other two lengths' extending only e relatively shortdistance es compared` with fthe first two lengths, and suchshorterlengths lyingadjacent the fire box end of the ii'e tubes. Intestimony whereof' have hereunto signed -ny name inthe :presence oflthetivo su scribed Witnesses.. 1 Hf, v j CHARLES D'. Yonne'. Witnesses 1S..E. GEARHARQL,

Orm B. FURRER.

